L.g.f.: -log( Sum_{n=-oo..+oo} (-2)^n * (2*x)^(n^2) ) = Sum_{n>=1} a(n) * x^n/n.
A337950
L.g.f.: -log( Sum_{n=-oo..+oo} (-2)^n * (2*x)^(n^2) ) = Sum_{n>=1} a(n) * x^n/n.
Terms
- a(0) =5a(1) =25a(2) =125a(3) =353a(4) =1425a(5) =5425a(6) =18625a(7) =69121a(8) =286145a(9) =1082625a(10) =4250625a(11) =17072897a(12) =67375105a(13) =269185025a(14) =1079450625a(15) =4296933377a(16) =17185439745a(17) =68786663425a(18) =274902810625
External references
- oeis: A337950